Cabrera allegedly told police however that he was trying to knock the family dog off the bed and accidentally hit the baby.

Sources told NBC10's Nefertiti Jaquez that Cabrera eventually confessed to killing his own child. He was arrested and charged with murder.

Cabrera's 15-month-old daughter as well as three other children his partner had from a previous relationship also lived with the couple, according to sources close to the investigation. All of the children are currently living with relatives.

Officials also say they spotted bruises on the 15-month-old girl and are trying to determine whether Cabrera also abused her.

The mother has not been charged. Cabrera is scheduled for a preliminary hearing on May 1.